在实际登录redmine的过程中,我们遇到了如下的error
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
ERROR 1045 (28000): Access denied for user 'redmine'@'localhost' (using password: YES)
Solution 1---空用户error.
Solution 2---Windows 重置mysql root账户密码.
Solution 2---Linux 重置mysql root账户密码.
==============================================
以下结合网上的解决方案进行了初步分析:
Solution 1---空用户error
1、停用mysql服务:
# service mysql stop
2、输入命令:
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
3、登入数据库:
# mysql -u root mysql
4、mysql> use mysql;
5、mysql> select user,host,password from user;
结果如下:
+------+-----------------------+----------+
| user | host | password |
+------+-----------------------+----------+
| root | % | mima |
| root | localhost.localdomain | mima |
| root | 127.0.0.1 | mima |
| | localhost | |
| | localhost.localdomain | |
+------+-----------------------+----------+
6、将上面查询出来的空用户删除:
mysql> delete from user where user=' ';
7、退出数据库:
mysql> quit
8、启动mysql服务:
# service mysql start
9、重新用命令:
mysql -u root -p
登录,OK!
Solution 2---Windows 重置mysql root账户密码.
搜索Windows上mysql目录的my.ini文件,
在[mysqld]这个条目下加入 skip-grant-tables
保存退出后重启mysql
1.点击“开始”->“运行”(快捷键Win+R)。
2.停止:输入 net stop mysql
3.启动:输入 net start mysql
这时候在cmd里面输入mysql -u root -p就可以不用密码登录了,出现password:的时候直接回车可以进入,不会出现ERROR 1045 (28000),但很多操作都会受限制,因为我们不能grant(没有权限)。
按下面的流程走(红色部分为输入部分,粉红色的是执行后显示的代码不用输入):
1.进入mysql数据库:
mysql> use mysql;
Database changed
2.给root用户设置新密码,蓝色部分自己输入:
mysql> update user set password=password("新密码") where user="root";
Query OK, 1 rows affected (0.01 sec)
Rows matched: 1 Changed: 1 Warnings: 0
3.刷新数据库
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
4.退出mysql:
mysql> quit
Bye
改好之后,再修改一下my.ini这个文件,把我们刚才加入的"skip-grant-tables"这行删除,保存退出再重启mysql就可以了。
Solution 2---Linux 重置mysql root账户密码.
1、停用mysql服务:
# service mysql stop
2、输入命令:
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
3、登入数据库:
# mysql -u root mysql
4、mysql> use mysql;
5、mysql> update user set password=password("新密码") where user="root";
Query OK, 0 rows affected (0.13 sec)
Rows matched: 4 Changed: 0 Warnings: 0
6、刷新数据库
mysql> flush privileges;
Query OK, 0 rows affected (0.05 sec)
mysql> quit
Bye
6、重启 $ sudo service mysql start
mysql start/running, process 12719
7、登录:
$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 49
Server version: 5.5.54-0ubuntu0.14.04.1 (Ubuntu)
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
成功登录。
欢迎交流!
参考:
http://www.jb51.net/article/82421.htm
http://blog.sina.com.cn/s/blog_759a5a7c01017dj0.html